Defining and exploring properties in diagnostic systems

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Published Oct 11, 2010
DOI https://doi.org/10.36001/phmconf.2010.v2i1.1927
Nuno Belard
Airbus France; 316 route de Bayonne; 31060 Toulouse, France
Yannick Pencolé
LAAS-CNRS; 7 Avenue du Colonel Roche; F-31077 Toulouse, France
Michel Combacau
Université de Toulouse; UPS, INSA, INP, ISAE; LAAS; 7 Avenue du Colonel Roche, F-31077 Toulouse, France

Abstract

Every model-based diagnostic approach relies on a representation of a real-world system, in this paper called believed system. The believed system is used along with the observations about the real-world system to generate a diagnostic problem to be solved. In this paper it is firstly argued that believed systems can differ from real-world systems in many different manners. As so, properties of believed systems, diagnostic problems and diagnostic results are introduced. Then, a series of relations between these properties are proved. The importance of such relations, sometimes seen as intuitive, is that they are necessary to formally prove the accordance between the real-world system and the believed system; to formally prove that a believed system and a diagnostic problem will produce high-quality diagnostic results; or even to ease diagnostic algorithms, since for systems and problems with certain properties, different model-based diagnostic approaches produce the same diagnostic results. In order to introduce the referred properties and reasoning about them a framework of diagnosis based on the difference between the believed and the real systems is proposed.

How to Cite

Belard, N., Pencolé, Y., & Combacau, M. (2010). Defining and exploring properties in diagnostic systems. Annual Conference of the PHM Society, 2(2). https://doi.org/10.36001/phmconf.2010.v2i1.1927
Abstract 186 | PDF Downloads 189

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Keywords

Model properties, logical foundations, model incompleteness

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Issue
Vol. 2 No. 2 (2010): Proceedings of the 21st International Workshop on the Principles of Diagnosis, held jointly with the Annual Conference of the PHM Society 2010
Section
Poster Presentations

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